The No. 14 typhoon "Candu" of this year, which is infinitely approaching China's east China, is hesitating whether to land in China or not.
But that doesn't stop it from becoming this year's "Wind King."
On the morning of September 13, Jiangsu, Zhejiang, Shanghai and other places have begun to show obvious wind and rain. Many netizens have posted the wind and rain of their location on the Internet. #Zhejiang's wind fast to blow sunflowers bald # once on the hot search.
Explosive growth, maintaining super typhoon level for more than 100 hours, wiping through Taiwan Province straight to Jiangsu, Zhejiang and Shanghai, the path is constantly adjusted... Since its inception, "Candu" has been attracting much attention.
<b>"Candu" Can't Move Whether or not to land in Our country is a mystery</b>
The "Candu" that was originally planned to land in East China has once again changed its path.
According to the forecast of the Central Meteorological Observatory, the center of this year's No. 14 typhoon "Candu" (strong typhoon level) was located at 5 o'clock in the afternoon today (13th) on the sea surface about 180 kilometers south-southeast of Shanghai, and the maximum wind near the center was 14 (42 m/ s).
It is expected that "Candu" will move slowly north-west at a speed of 5-10 kilometers per hour, circle or move slowly in the sea near the mouth of the Yangtze River during the day on the 14th and 15th (33-42 m/ s, 12-14, typhoon or strong typhoon), and on the night of the 15th, it will begin to move in a north-easterly direction, and the intensity will gradually weaken.
<b>The typhoon has arrived: the river is rising, the wind is strong</b>
Regardless of whether "Candu" landed in China or not, it is an established fact that it will bring continuous strong wind and rain to the "free mail area".
On September 13, Fenghua District of Ningbo, Zhejiang Province, ushered in a storm. In a village, the river is swelling, the water is turbulent, and the river has flooded the road. The villagers were transferred by car on the evening of the 12th, and there were no casualties. At present, it is temporarily placed in the gymnasium of Fenghua No. 1 School.
According to the Central Meteorological Observatory, at 8-14 o'clock on the 13th, the rain of "Candu" almost all fell in Ningbo, and the cumulative rainfall in many places in Ningbo exceeded 100 mm.
Landslide site. Photo by Xu Jian
Heavy rain also led to geological disasters in the local area, and on the morning of the 13th, a landslide occurred near the Siming Tunnel on the upper line of the Fenghua District, causing half of the tunnel to be blocked. The slope where the collapse occurred is located in the south of the Siming Tunnel Xiaowang Temple to the direction of Xikou, more than 30 meters high, about 60 meters long, and an area of about 2,000 square meters.
Affected by the "Candu", the coastal area of Zhoushan, Zhejiang Province, has set off a fierce wind and waves early in the morning of the 13th.
The wonders of the tide of the Qiantang River are also more violent than ever.
At present, the Qiantang River ushered in the autumn flood season, and on September 12, at the tide viewing points such as Xiasha Bridge and Qibao in Hangzhou, the tide height reached about 1.4 meters.
On the morning of the 13th, the National Marine Forecast Station continued to issue double red warnings for storm surges and waves. From noon on September 13 to noon on the 14th, there will be 6 to 9 meters of wild waves in the East China Sea to the wild wave area, and the wave warning level in the offshore waters will be orange; in the coastal waters of Shanghai and northern Zhejiang, there will be 4 to 6 meters of huge waves to wild waves, and the wave warning level of the coastal waters will be red.
Data chart: On September 12, this year's No. 14 typhoon "Candu" approached Zhejiang, and the sky over Hangzhou was covered with dark clouds. Photo by Wang Gang
<b>Why does the path of "Candu" keep changing? </b>
If "Candu" according to the original prediction of the Central Meteorological Observatory, it landed on the coastal area from Pudong in Shanghai to Qidong, Jiangsu Province from the evening of the 13th to the night (33-40 m/ s, 12-13, typhoon level). Then, it will become the strongest typhoon to make landfall in Shanghai after 1949.
Where are the variables of the "candu" that the path is constantly changing? Zhang Juan, a meteorological analyst at the China Weather Network, said it mainly depends on when its path turns west.
At present, the mainland high pressure on the west side of "Candu" is strengthening, and the subtropical high pressure on the east side is also strengthening. The intensity and time of the westward extension of the subtropical high pressure on the east side will directly affect the time of the westward bend of the "Candu" path, and will also affect the time and probability of its landing.
However, regardless of whether it lands or not, it will hover in the Yangtze River estuary until the 15th, and only move northeast under the guidance of the west wind trough on the 16th, and the continuous wind and rain impact needs special attention to prevention.
Data map: On September 13, on the Dongji Island of Putuo in Zhoushan, Zhejiang Province, the waves lapping at the shore stirred up several meters of water splashes Wang Zhanlong provided a picture
<b>Why are autumn typhoons so fierce? </b>
The wind king "Candu" makes many people wonder, it is autumn, why is the typhoon still so strong?
Meteorological statistics show that in the past 72 years, the number of typhoons generated in summer was 833, the most active season for typhoons, while 821 typhoons were generated in autumn, second only to summer.
Although the number of summer typhoons generating and making landfall is the highest in a year, meteorological big data shows that autumn typhoons are more likely to play a "fierce role". Between 1949 and 2020, super typhoons accounted for 27.9% of the typhoons generated in autumn, much higher than the 18% in summer.
Why are autumn typhoons so destructive? Shi Yan, a meteorological analyst at The China Weather Network, said that from the beginning of the spring equinox, the direct point of the sun moved from the equator to the Tropic of Cancer, heating the tropical oceans of the northern hemisphere, and the sea heat continued to accumulate, usually reaching the highest sea temperature from August to September, and the high sea temperature was conducive to typhoon generation and energy enhancement.
At the same time, from the end of August to the beginning of September, the cold air begins to be active, increasing the pressure gradient, and the wind speed near the center of the typhoon increases, which is also conducive to the strengthening of the typhoon, so in the autumn, the probability of strong typhoons or super typhoons is higher.
In addition, due to the gradual increase in cold air in autumn, typhoons are also more likely to encounter cold air, and "autumn typhoon + cold air" is a terrible combination, and the combination of the two often stimulates violent precipitation, resulting in greater disasters.
(China News Network)
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